Nearly two weeks after Katrina hit, when I thought I had seen it all, I saw more: A clinic for evacuee children with cancer, filled with children who had no homes and whose parents had been frantically searching for a place to get the chemotherapy and radiation the kids so desperately needed.
With no working telephones or computers, parents heard word of mouth about this clinic in Baton Rouge, where many of the doctors were also homeless and all were working without the children's medical records as they pieced together what each sick child needed.
As I went from exam room to exam room meeting frightened and tired families, I heard screaming. Six-year-old Tony Nata was getting a central IV line put into his chest so he could receive the treatments he'd missed. His mother showed me pictures of the family's car floating, images of all their possessions awash on the front lawn in Slidell, Louisiana, their house devastated.
Tony used to receive his treatments at Children's Hospital in New Orleans, which had closed after Katrina. Tony has leukemia and was given a 20 percent chance of living without a bone marrow transplant. Even with it, doctors gave him only about a 50-50 chance of living.
I've been following the Natas ever since, and on tonight's show, viewers finally get to see Tony having his transplant. This is what his family has been waiting for -- to see if this procedure really does save his life.
Viewers also get to meet the heroes of this story, everyone from his four-year-old sister to firefighters from New York City. His sister, Allie, underwent the three-day procedure in the hospital to give her brother bone marrow cells (as she peered into his room, she said, "I hope you love me now, Tony!").
The firefighters, who are part of a New York City group that helps others as a way of saying thank you for the help received on September 11, helped rebuild Tony's house. Later, other groups from around the country pitched in to finish the house -- about 150 people in all, working to help a boy most of them had never met.
Before the transplant, Tony and his family had been living in a FEMA trailer and a relative's home. But because the procedures that prepared him for the bone marrow transplant basically shut down his immune system, he required a very clean place to live.
I plan to keep up with the Nata family for many months to come.